Final answer:
Operating a train with the master controller in the switching position for extended periods can lead to damage of electrical components and overheating due to excessive current and heat.
Step-by-step explanation:
A train should not be operated for long periods with its master controller held in the switching position because doing so could cause damage to the electrical components or overheating.
The switching position is typically used for changing the direction of the train or to initiate movement.
Prolonged use in this position can lead to excessive current flow and heat generation, which may result in wear or failure of the electrical contacts, motors, or other associated components.
The complete question is:content loaded
A train must NOT be operated for long periods with its master controller held in the switching position because such operation could cause the